Clamping-tool for holding and butting rail ends, beams, and the like during welding.



H. GOLDSGHMIDT & F. LANGE. CLAMPING TOOL FOR HOLDING AND BUTTING RAIL ENDS, BEAMS, AND THE LIKE DURING: WELDING.

APPLICATION FILED OUT. 24, 1907.

Patentgd; Apr. 2%, 1909;.

gg ggk W 1 w WW m m v nmj i I: 1 x H J v J f M I 1/ 0 Z. M a f I- a x a I :IANS (;l()LDS'Clll\lll)l AND FELIX LANG-E, OF ESSEN-ON-THE-RUHR, GERMANY, ASSIGNORS TO GOLDSCHMIDT THERMIT COMPANY, OF NEW YORK, N. Y.

CLAMPING-TOOL FOR HOLDING AND BUTTING BAIL ENDS, BEAMS, AND THE LIKE DURING WELDING.

Specification of Letters Patent. Application f led October 24,1907. SerialNo. 398,98.

latented April 20, 1909. v

To all 'ufiliom it may concern:

lie itiknown that we, Hans GoLnsoiiMIn'r and FELIX LANGE, both subjects of the King of Prussia German Emperor, and residents o of litsSLlhOll-lllO-Rlllll', in the Province of the Rhine, German Empire, have invented a new and useful Clamping-Tool for l-lolding; and lihtting Rail Ends, Beams, and the 10 ing is an exact specification. I l p This invention relates to the clamping devices uscd in welding together the ends of rails, girders or other profile irons. Such clamping devices require to be of portable t'orin so that they may be readily moved from place "to place according to the position at which the oint is to be eii'ected. Such elai nping devices for instance are employed inflw-elding rails by the well known Goldxscl nnidt process.

l he: object. of the present invention is to z provide simple and etlicient construction of clamping device for the purpose indicated. Y

Juicer-ding to the present invention the tflaniping is effected by means of dogs which a re first caused to grip the rail end or the like which pass through separate parts o l" the cl amp. When the rails are gripped l i the dogs the frame pieces carrying these fapproached. The frame pieces are od with suitable guiding means for 0 that when the dogs are tightened the rails these rails are brought into their correct position with regard to one another, that is 'to say, directly into line. {'l-he train ces consist hereinafter de: scribed o eparate yoke pieces having a central. bosswhich is bored out in conical itorin. They-two yoke pieces being arranged with the wideiends of the cones facing each other. Thes'd separate yoke pieces are caused to approach toward one another by means of bolts passing through eye-pieces on each side of the central boss.

The improved"clamping device is illustrated in one convenient form in the accompanying drawings in which- Figure Lrepresents a section through "th ccnter of Fig. 2 looking toward the wide end of the boss'on the yoke piece, Fig. 2 is a plan view ofthe complete clamping device the upper part being shown in section.

In carrying the invention into eli'ect ac- Lil'g During Welding, of which the followof the yoke piece 6.

- piece is connected by arms 2/ cording to the form shown clamping dogs a are provided with faces a corresponding to the profile of the rail 8 forming one of the pieces to be joined. The other piece 8 Fig. 2 is also similarly grippedin dogs arranged on the other yoke piece I). The dogs a arranged in the boss of the yoke piece (1 are provided with conical surfaces a adapted to bear against the conical bored out part b the boss of the yoke with eye-pieces 0 through which bolts (Z are passed. The bolts (Z join the two voke pieces together.

.The heads of the bolts d butt against the lower yoke piece in Fig. 2 while tightening is effected by screwing up the nuts d. The dogs a, may conveniently be cast with openings (1, so as to avoid Weight. In order to cause the dog pieces a to bring the rails s and .9 into correct alineinent a feather in is provided which engages in the boss of the yoke piece 7) and also in one of the dog pieces 0. Of course a similar feather 7; is provided in the lower yoke piece in Fig. 2. A strengthening rail 7) may be provided so to prevent breakage of the yoke pieces.

The operation is as follows: When two rails for instance are to be joined. the yoke pieces are first passed over the ends of the ails and the bolts (2 pas ed through. The dog pieces are then inserted by hand, after which the nuts (Z are tightened. In this way the yoke pieces are caused to approach thereby first tightening the dog pieces (1 against the rail, and simultaneously bringing these rails into. exact alineinent. The further scrmving of the nuts (Z causes the rails s and s to approach and thereby eliect the welding of the two ends which have been heated in any convenient manner as for instance by the above mentioned Goldschinidt process.

In manufacturing the above apparatus the dogs a are convenientlybolted to a piece of rail of the size with which they are in tended to work and the assembled dogs and rails are then turned so as to fit the bored out boss of the yoke piece. exact alineinent ofthe two rails is secured.

in the drawings we have illustrated one convenient construction in which the lower part of the boss of the yoke piece is re moved. It is for the purpose of facilitating the ii'isertionof the apparatus on rails for In this way ready led on the ground and further this construction enables the yoke piece to be readily removed after the joining is ettected. Further instead of using 'conical surfaces in the yoke piece any form of through going tapered opening may be employed but in all casesthe wide end of the tapers in the yoke pieces must face each other. Also instead,

instance electric tam rails which are ah! of providing two pairs of clamping jaws or dogs a larger number may be employed according. to the particular or the like dealt with.

We claim:

profile of the rail 1. A portable clamping device for use in Welding rail lengths and the like coinprising two separate yoke pieces each having a central boss with a tapered opening extend- I ing through the same, the wide ends of the tapers being toward each other, joining I bolts located at each side of the boss for drawing said yoke pieces together, clamping pieces slidable in said tapered openings, said clamping pieces being provided with faces corresponding to the profile of the piece to be gripped and guiding means for said clamping pieces in each yoke whereby the profiles are properly presented, substantially asdescribed. i

2. A portable clamping. device for use in l welding rail lengths and the like having in combination two yoke pieces each having a 1 central boss and an eye-piece on each side l of said central boss said central bosses being our hands in the presence of bored out conically to receive the rail lengths and the like and arranged with their wide ends facing each othe bolts passing throlnrh said eye-pieces and adapted to cause the yokes to approach, clamping dog pieces slidably fitted within the conical hole in said central boss and guiding means for one of said dog pieces so as to cause their gripping :faces to be correctly presented to the article to be gripped.

A portable clamping device for use in welding rail lengths and the like having in combination two yoke pieces each having a central boss open at its lower side to facilitate insertion and removal from the rail or the like, an eye piece at each side oi said central boss, said central bosses being bored out conically ends facing each other, bolts passing through said eye pieces and adapted to cause the yokcs to approach, clamping dog pieces slidably fitted within the conical hole in said central boss and guiding means for one of said dog pieces so as to cause their gripping faces to be correctly presented to the article to be gripped.

In witness whereof we have hereunto set two witi'icsses HANS G ULDf-it til-Mi i )l. FELIX LANGE. Witnesses M. ENenLs, ALFRED POHLMICE'ER.

and arranged with their Wide 

